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i965: Fix vector splitting RHS channel selection with sparse writemasks. 

Fixes:
glsl-fs-all-02
glsl-fs-dot-vec2
This commit is contained in:
Eric Anholt 2010-09-27 18:29:15 -07:00
parent 169ff0cc9d
commit 3610e0c1a0
1 changed files with 8 additions and 3 deletions
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11
src/mesa/drivers/dri/i965/brw_fs_vector_splitting.cpp
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@ -264,8 +264,10 @@ ir_vector_splitting_visitor::visit_leave(ir_assignment *ir)
variable_entry *rhs = rhs_deref ? get_splitting_entry(rhs_deref->var) : NULL;
if (lhs_deref && rhs_deref && (lhs || rhs) && !ir->condition) {
unsigned int rhs_chan = 0;
/* Straight assignment of vector variables. */
for (unsigned int i = 0; i < ir->rhs->type->vector_elements; i++) {
for (unsigned int i = 0; i < ir->lhs->type->vector_elements; i++) {
ir_dereference *new_lhs;
ir_rvalue *new_rhs;
void *mem_ctx = lhs ? lhs->mem_ctx : rhs->mem_ctx;
@ -283,15 +285,18 @@ ir_vector_splitting_visitor::visit_leave(ir_assignment *ir)
}
if (rhs) {
new_rhs = new(mem_ctx) ir_dereference_variable(rhs->components[i]);
new_rhs =
new(mem_ctx) ir_dereference_variable(rhs->components[rhs_chan]);
} else {
new_rhs = new(mem_ctx) ir_swizzle(ir->rhs->clone(mem_ctx, NULL),
i, i, i, i, 1);
rhs_chan, 0, 0, 0, 1);
}
ir->insert_before(new(mem_ctx) ir_assignment(new_lhs,
new_rhs,
NULL, writemask));
rhs_chan++;
}
ir->remove();
} else if (lhs) {